Andris Bukejs, Konstantin Nadein. 2013. A new species of the genus Psyllototus (Coleoptera: Chrysomelidae: Galerucinae: Alticini) from Upper Eocene Baltic amber. Zootaxa, 2013, 3609(5): 465-470. http://www.ssc-ras.ru/files/files/20_%20Nadein.pdf
